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How are steel bars in foundation calculated?

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How are steel bars in foundation calculated?

For 1 m length of steel in kg/m = d²/162 kg/m

  1. 1.) Calculate the steel quantity of an X-direction bar which is parallel to it for top jali.
  2. 2.)
  3. Therefore Steel Quantity of Square Pad footing (Q) :
  4. Q = Qb + Qt.
  5. ∴ Q = 22.22 + 22.22 = 44.44 kg = 0.044 tonne.

How do I calculate steel?

STEEL QUANTITY:

  1. Weight of bar in kg/meter should be calculated as (d2 ÷ 162) where’d’ is the diameter of bar in mm.
  2. ‘L’ for column main steel in footing should be considered as minimum 30cm/as specified.
  3. For bent up bar add 0.42d in straight length of bar where’d’ is the clear depth of beam/slab.

How do you calculate steel bars?

The quantity is done in two steps.

  1. (Calculation of Bars No’s) First, calculate the number of bars required (main and distribution both). FORMULA = (Total length – Clear cover)/center to center spacing + 1. Main bar = (5000 – (25+25))/100 + 1.
  2. (Cutting length) MAIN BAR: FORMULA = (L) + (2 x Ld) + (1 x 0.42D) – (2 x 1d)

How much rebar is in a slab?

Generally, one stick of rebar per 8 inches of footing width will suffice. If your footings are 16 inches wide, you will need to add two sticks of rebar along the width of the footing; however, if your footings are 24 inches wide, you will need three sticks.

How do you calculate bars for a slab?

Weight of bar in kg/meter should be calculated as (d2 ÷ 162) where’d’ is the diameter of bar in mm. ‘L’ for column main steel in footing should be considered as minimum 30cm/as specified. For bent up bar add 0.42d in a straight length of the bar where’d’ is the clear depth of beam/slab.

How do you calculate bars?

How much Steel is required for slab?

Thumb rule for Steel required for RCC slab is 80 kgs/m3, then quantity of steel required for 100 sq ft ( 0.944 m3) rcc slab is equal to = 80 × 0.944 = 75.5 Kgs. Ans. :- 75.5 Kgs steel quantity are required for 100 sq ft 4 inch thick rcc roof slab.

How to calculate steel quantity from BBS of slab?

Steel Quantity Calculation (Cutting length) main bar: formula = (l) + (2 x ld) + (1 x 0.42d) – (2 x 1d), where l = clear span of the slab, ld = development length which is 40 d (where d is diameter of bar), 0.42d = inclined length (bend length), 1d = 45° bends (d is diameter of bar) first calculate the length of “d“. You Might Also Like

How to calculate the length of a steel bar?

Quantity of 1st Bars = √ R 2 – (C/C) 2 { This is the formula of calculating length of steel in circular slab}. = √ (0.914) 2 – (0.127) 2. = 0.905 m. Quantity of 2nd Bars = √ R 2 – (C/C) 2. = √ (0.954) 2 – (0.254) 2. = 0.877 m.

How much is the weight of a steel rod?

Hence Total weight of steel rod is 22.613 kg and the length of the steel rod is 25.472 meters. So, friends, I hope this article on “ Calculate weight of steel bar ” remains helpful for you.